Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-Isolated DC-DC Power Modules 3Vdc –14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A Output Current Features RoHS Compliant Applications Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment Industrial equipment Vin+ VIN PGOOD Vout+ VOUT SENSE MODULE Cin ON/OFF Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb reflow environment (Z versions) DOSA based Wide Input voltage range (3Vdc-14.4Vdc) Output voltage programmable from 0.6Vdc to 5.5Vdc via external resistor Tunable LoopTM to optimize dynamic output voltage response Power Good signal Fixed switching frequency Output overcurrent protection (non-latching) Overtemperature protection Remote On/Off Ability to sink and source current Cost efficient open frame design Small size: 12.2 mm x 12.2 mm x 8.5 mm (0.48 in x 0.48 in x 0.335 in) Wide operating temperature range [-40°C to 85°C] UL* 60950-1Recognized, CSA C22.2 No. 60950-1-03 Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities RTUNE CTUNE Q1 Co † TRIM RTrim GND Description TM The 12A Analog Pico DLynx power modules are non-isolated dc-dc converters that can deliver up to 12A of output current. These modules operate over a wide range of input voltage (VIN = 3Vdc-14.4Vdc) and provide a precisely regulated output voltage from 0.6Vdc to 5.5Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection. The Tunable LoopTM feature allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area. * UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards ‡ Document No: DS10-008 ver. 1.12 PDF name: PVX012A0X.pdf Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit All VIN -0.3 15 Vdc Input Voltage Continuous Operating Ambient Temperature (see Thermal Considerations section) All TA -40 85 °C -D version TA -40 105 °C All Tstg -55 125 °C Storage Temperature Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 3 ⎯ 14.4 Vdc Maximum Input Current All IIN,max 12 Adc VO,set = 0.6 Vdc IIN,No load 45 mA VO,set = 5Vdc IIN,No load 75 mA Input Stand-by Current (VIN = 12.0Vdc, module disabled) All IIN,stand-by 0.65 mA Inrush Transient All It Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN =0 to 14V, IO= IOmax ; See Test Configurations) All 40 mAp-p Input Ripple Rejection (120Hz) All -60 dB (VIN=3V to 14V, IO=IO, max ) Input No Load Current (VIN = 12.0Vdc, IO = 0, module enabled) LINEAGE POWER 2 1 2 As 2 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Electrical Specifications (continued) Parameter Device Symbol Min Output Voltage Set-point (with 0.1% tolerance for external resistor used to set output voltage) All VO, set -1.0 Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) All VO, set -3.0 Adjustment Range (selected by an external resistor) (Some output voltages may not be possible depending on the input voltage – see Feature Descriptions Section) All VO 0.6 Remote Sense Range All Typ ⎯ Max Unit +1.0 % VO, set +3.0 % VO, set 5.5 Vdc 0.5 Vdc Output Regulation (for VO ≥ 2.5Vdc) Line (VIN=VIN, min to VIN, max) All ⎯ +0.4 % VO, set Load (IO=IO, min to IO, max) All ⎯ 10 mV mV Output Regulation (for VO < 2.5Vdc) Line (VIN=VIN, min to VIN, max) All ⎯ 5 Load (IO=IO, min to IO, max) All ⎯ 10 mV Temperature (Tref=TA, min to TA, max) All ⎯ 0.4 % VO, set 50 100 mVpk-pk 20 38 mVrms Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1μF // 22 μF ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) RMS (5Hz to 20MHz bandwidth) External Capacitance ⎯ All All 1 TM Without the Tunable Loop All CO, max 22 ⎯ 47 μF ESR ≥0.15 mΩ All CO, max 22 ⎯ 1000 μF ESR ≥ 10 mΩ All CO, max 22 ⎯ 5000 μF Output Current (in either sink or source mode) All Io 0 12 Adc Output Current Limit Inception (Hiccup Mode) (current limit does not operate in sink mode) All IO, lim 200 % Io,max Output Short-Circuit Current All IO, s/c 1.5 A ESR ≥ 1 mΩ With the Tunable Loop TM (VO≤250mV) ( Hiccup Mode ) Efficiency VIN= 12Vdc, TA=25°C IO=IO, max , VO= VO,set Switching Frequency 1 VO,set = 0.6Vdc η 77.5 % VO, set = 1.2Vdc η 85.9 % VO,set = 1.8Vdc η 89.6 % VO,set = 2.5Vdc η 92.4 % VO,set = 3.3Vdc η 93.4 % VO,set = 5.0Vdc η 95.0 All fsw ⎯ 600 % ⎯ kHz TM External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as TM getting the best transient response. See the Tunable Loop section for details. LINEAGE POWER 3 Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current General Specifications Parameter Calculated MTBF (IO=0.8IO, max, TA=40°C) Telecordia Issue 2 Method 1 Case 3 Device Min All Max 16,817,995 ⎯ Weight Typ Unit Hours ⎯ 2.33(0.082) g (oz.) Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit ⎯ 1 mA ⎯ VIN,max V On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Device is with suffix “4” – Positive Logic (See Ordering Information) Logic High (Module ON) Input High Current All IIH Input High Voltage All VIH 3.5 Logic Low (Module OFF) Input Low Current All IIL ⎯ ⎯ 10 μA Input Low Voltage All VIL -0.2 ⎯ 0.3 V Device Code with no suffix – Negative Logic (See Ordering Information) (On/OFF pin is open collector/drain logic input with external pull-up resistor; signal referenced to GND) Logic High (Module OFF) Input High Current All IIH ― ― 1 mA Input High Voltage All VIH 3.5 ― VIN, max Vdc Logic Low (Module ON) Input low Current All IIL ― ― 10 μA Input Low Voltage All VIL -0.2 ― 0.3 Vdc All Tdelay ― 5 ― msec All Tdelay ― 5 ― msec All Trise ― 2 Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state) Case 1: On/Off input is enabled and then input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) o Output voltage overshoot (TA = 25 C ― msec 3.0 % VO, set VIN= VIN, min to VIN, max,IO = IO, min to IO, max) With or without maximum external capacitance Over Temperature Protection All Tref 120/ 130 °C (See Thermal Considerations section) LINEAGE POWER 4 Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units Input Undervoltage Lockout Turn-on Threshold All Turn-off Threshold All Hysteresis All 2.9 2.6 Vdc Vdc 0.3 Vdc 112.5 %VO, set 87.5 %VO, set 30 Ω PGOOD (Power Good) Signal Interface Open Drain, Vsupply ≤ 5VDC Overvoltage threshold for PGOOD Undervoltage threshold for PGOOD Pulldown resistance of PGOOD pin LINEAGE POWER All 5 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 0.6Vo and 25oC. 90 12 OUTPUT CURRENT, Io (A) 85 EFFICIENCY, η (%) 80 Vin=3.3V 75 70 65 Vin=14.4 V Vin=12V 60 55 50 0 2 4 6 8 10 12 1.5m/s (300LFM) Ruggedized (D) Part (105°C) 4 2 2m/s (400LFM) 1m/s (200LFM) 0 55 65 75 85 95 105 OUTPUT VOLTAGE VO (V) (5mV/div) IO (A) (10Adiv) TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (200mV/div) Figure 4. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout3x47uF+6x330uF, CTune-47nF, RTune-180ohms OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (200mV/div) LINEAGE POWER 6 0.5m/s (100LFM) Figure 2. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (2ms/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max). Standard Part (85°C) AMBIENT TEMPERATURE, TA C TIME, t (1μs/div) Figure 3. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). NC 8 O OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current. 10 TIME, t (2ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 6 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 1.2Vo and 25oC. 95 12 EFFICIENCY, η (%) 85 OUTPUT CURRENT, Io (A) 90 Vin=3.3V 80 Vin=12V 75 Vin=14.4 V 70 65 60 55 50 0 2 4 6 8 10 12 LINEAGE POWER 4 2 1.5m/s (300LFM) 1m/s (200LFM) 2m/s (400LFM) Ruggedized (D) Part (105°C) 0 65 75 85 95 105 VO (V) (10mV/div) IO (A) (10Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max). Standard Part (85 C) Figure 8. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (20μs /div) VIN (V) (5V/div) Figure 10. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout1x47uF+3x330uF, CTune-10nF & RTune-220ohms VO (V) (500mV/div) VON/OFF (V) (5V/div) VO (V) (500mV/div) TIME, t (2ms/div) 6 O INPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 9. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). 0.5m/s (100LFM) 8 AMBIENT TEMPERATURE, TA C OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE TIME, t (1μs/div) NC 55 OUTPUT CURRENT, IO (A) Figure 7. Converter Efficiency versus Output Current. 10 TIME, t (2ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 7 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 1.8Vo and 25oC. 100 12 EFFICIENCY, η (%) 90 OUTPUT CURRENT, Io (A) 95 Vin=3.3V 85 80 Vin=14.4 V Vin=12V 75 70 65 60 0 2 4 6 8 10 2 1.5m/s (300LFM) 1m/s (200LFM) 2m/s (400LFM) Ruggedized (D) Part (105°C) 0 65 75 85 95 105 OUTPUT VOLTAGE VO (V) (20mV/div) IO (A) (10Adiv) TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div) Figure 16. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout1x47uF+2x330uF,CTune-5600pF & RTune-270ohms OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (500mV/div) LINEAGE POWER Standard Part (85°C) 4 Figure 14. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (2ms/div) 6 AMBIENT TEMPERATURE, TA C TIME, t (1μs/div) Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). 0.5m/s (100LFM) O OUTPUT CURRENT, IO (A) Figure 15. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). NC 8 55 12 Figure 13. Converter Efficiency versus Output Current. 10 TIME, t (2ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 8 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 2.5Vo and 25oC. 100 12 OUTPUT CURRENT, Io (A) 95 EFFICIENCY, η (%) 90 85 80 Vin=14.4V Vin=12V Vin=4.5V 75 70 65 60 0 2 4 6 8 10 12 LINEAGE POWER Standard Part (85°C) 4 2 Ruggedized (D) Part (105°C) 1m/s (200LFM) 1.5m/s (300LFM) 2m/s (400LFM) 0 65 75 85 95 105 OUTPUT VOLTAGE VO (V) (20mV/div) IO (A) (10Adiv) Figure 20. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) Figure 22. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout1x47uF+1x330uF,CTune-3300pF & RTune-270ohms OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (1V/div) Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). 6 O OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (2ms/div) 0.5m/s (100LFM) AMBIENT TEMPERATURE, TA C TIME, t (1μs/div) Figure 21. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). NC 8 55 OUTPUT CURRENT, IO (A) Figure 19. Converter Efficiency versus Output Current. 10 TIME, t (2ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 9 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 3.3Vo and 25oC. 100 12 90 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 Vin=5V Vin=14.4 V 85 Vin=12V 80 75 70 0 2 4 6 8 10 LINEAGE POWER 1m/s (200LFM) Standard Part (85°C) 4 2 1.5m/s (300LFM) Ruggedized (D) Part (105°C) 0 65 75 2m/s (400LFM) 85 95 105 VO (V) (50mV/div) IO (A) (10Adiv) OUTPUT VOLTAGE Figure 26. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) Figure 28. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout1x47uF+1x330uF,CTune-2700pF & RTune-330ohms OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (1V/div) Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). 6 O OUTPUT CURRENT VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (2ms/div) 0.5m/s (100LFM) AMBIENT TEMPERATURE, TA C TIME, t (1μs/div) Figure 27. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). NC 8 55 12 OUTPUT CURRENT, IO (A) Figure 25. Converter Efficiency versus Output Current. 10 TIME, t (2ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 10 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Characteristic Curves The following figures provide typical characteristics for the 12A Analog Pico DLynxTM at 5Vo and 25oC. 100 12 90 Vin=14.4V 85 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 Vin=7V Vin=12V 80 75 70 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) 4 1m/s (200LFM) 1.5m/s (300LFM) 2 Ruggedized (D) Part (105°C) 0 2m/s (400LFM) 65 75 85 95 O AMBIENT TEMPERATURE, TA C 105 VO (V) (50mV/div) OUTPUT VOLTAGE TIME, t (20μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) VON/OFF (V) (5V/div) VO (V) (2V/div) Standard Part (85°C) Figure 34. Transient Response to Dynamic Load Change from 50% to 100% at 12Vin, Cout-5x47uF, CTune-1500pF & RTune-330ohms OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE LINEAGE POWER 6 IO (A) (10Adiv) OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE TIME, t (1μs/div) Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max). 0.5m/s (100LFM) Figure 32. Derating Output Current versus Ambient Temperature and Airflow. Figure 31. Converter Efficiency versus Output Current. TIME, t (2ms/div) NC 8 55 12 Figure 33. Typical output ripple and noise (CO=22μF ceramic, VIN = 12V, Io = Io,max, ). 10 TIME, t (2ms/div) Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 11 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Design Considerations Input Filtering The 12A Analog Pico DLynxTM module should be connected to a low ac-impedance source. A highly inductive source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. To minimize input voltage ripple, ceramic capacitors are recommended at the input of the module. Figure 37 shows the input ripple voltage for various output voltages at 12A of load current with 2x22 µF or 3x22 µF ceramic capacitors and an input of 12V. Input Ripple Voltage (mVp-p) 250 60 1x22uF Ext 1x47uF Ext 2x47uF Ext 4x47uF Ext 50 40 Cap Cap Cap Cap 30 20 10 0 0.5 1.5 2.5 3.5 Output Voltage(Volts) 4.5 Figure 38. Output ripple voltage for various output voltages with external 1x22 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic capacitors at the output (12A load). Input voltage is 12V. 2x22uF 200 the module can be achieved by using the Tunable TM Loop feature described later in this data sheet Ripple (mVp-p) Data Sheet August 31, 2011 3x22uF 150 Safety Considerations 100 50 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Output Voltage (Vdc) Figure 37. Input ripple voltage for various output voltages with 2x22 µF or 3x22 µF ceramic capacitors at the input (12A load). Input voltage is 12V. Output Filtering TM The 12A Analog Pico DLynx modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 µF ceramic and 22 µF ceramic capacitors at the output of the module. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN EN 60950-1:2006 + A11 (VDE0805 Teil 1 + A11):2009-11; EN 60950-1:2006 + A11:200903. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a time delay fuse with a maximum rating of 15 A in the positive input lead. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic response of the module. Figure 38 provides output ripple information for different external capacitance values at various Vo and a full load current of 12A. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. Optimal performance of LINEAGE POWER 12 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Feature Descriptions Monotonic Start-up and Shutdown Remote On/Off The module has monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. TM The 12A Analog Pico DLynx power modules feature an On/Off pin for remote On/Off operation. Two On/Off logic options are available. In the Positive Logic On/Off option, (device code suffix “4” – see Ordering Information), the module turns ON during a logic High on the On/Off pin and turns OFF during a logic Low. With the Negative Logic On/Off option, (no device code suffix, see Ordering Information), the module turns OFF during logic High and ON during logic Low. The On/Off signal should be always referenced to ground. For either On/Off logic option, leaving the On/Off pin disconnected will turn the module ON when input voltage is present. For positive logic modules, the circuit configuration for using the On/Off pin is shown in Figure 39. When the external transistor Q1 is in the OFF state, the internal PWM Enable signal is pulled high through an internal resistor and the external pullup resistor and the module is ON. When transistor Q1 is turned ON, the On/Off pin is pulled low and the module is OFF. A suggested value for Rpullup is TBD Startup into Pre-biased Output The modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Output Voltage Programming The output voltage of the module is programmable to any voltage from 0.6dc to 5.5Vdc by connecting a resistor between the Trim and GND pins of the module. Certain restrictions apply on the output voltage set point depending on the input voltage. These are shown in the Output Voltage vs. Input Voltage Set Point Area plot in Fig. 41. The Upper Limit curve shows that for output voltages lower than 1V, the input voltage must be lower than the maximum of 14.4V. The Lower Limit curve shows that for output voltages higher than 0.6V, the input voltage needs to be larger than the minimum of 3V. 16 Figure 39. Circuit configuration for using positive On/Off logic. For negative logic On/Off modules, the circuit configuration is shown in Fig. 40. The On/Off pin should be pulled high with an external pull-up resistor (suggested value for the 3V to 14.4V input range is 20Kohms). When transistor Q1 is in the OFF state, the On/Off pin is pulled high, internal transistor Q4 is turned ON and the module is OFF. To turn the module ON, Q1 is turned ON pulling the On/Off pin low, turning transistor Q4 OFF resulting in the PWM Enable pin going high and the module turning ON. VIN+ Input Voltage (v) 14 TBA 12 Upper 10 8 6 4 Lower 2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Output Voltage (V) Figure 41. Output Voltage vs. Input Voltage Set Point Area plot showing limits where the output voltage can be set for different input voltages. MODULE Rpullup VIN(+) VO (+) PWM Enable I VS+ ON/OFF ON/OFF + VON/OFF Q1 GND 22K Q4 22K ON/OFF CSS LOAD TRIM _ Rtrim PVX012 NEGATIVE LOGIC FIGURE Figure 40. Circuit configuration for using negative On/Off logic. LINEAGE POWER GND Figure 42. Circuit configuration for programming output voltage using an external resistor. 13 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Without an external resistor between Trim and GND pins, the output of the module will be 0.6Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, should be as per the following equation: 12 Rtrim = kΩ (Vo − 0.6 ) Vo Rmargin-down MODULE Q2 Trim Rmargin-up Rtrim is the external resistor in kΩ Vo is the desired output voltage. Table 1 provides Rtrim values required for some common output voltages. Rtrim Q1 GND Table 1 VO, set (V) 0.6 0.9 1.0 1.2 1.5 1.8 2.5 3.3 5.0 Rtrim (KΩ) Open 40 30 20 13.33 10 6.316 4.444 2.727 Remote Sense The power module has a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin should not exceed 0.5V. Voltage Margining Output voltage margining can be implemented in the module by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 43 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.lineagepower.com under the Downloads section, also calculates the values of Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local Lineage Power technical representative for additional details. LINEAGE POWER Figure 43. Circuit Configuration for margining Output voltage. Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range. Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold of 120(Q1) / 130(L1)oC(typ) is exceeded at the thermal reference point Tref . Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. Input Undervoltage Lockout At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. 14 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Power Good Tunable LoopTM The module provides a Power Good (PGOOD) signal that is implemented with an open-drain output to indicate that the output voltage is within the regulation limits of the power module. The PGOOD signal will be de-asserted to a low state if any condition such as overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going ±10% outside the setpoint value. The PGOOD terminal can be connected through a pullup resistor (suggested value 100KΩ) to a source of 5VDC or lower. The 12A Pico DLynxTM modules have a feature that optimizes transient response of the module called Tunable LoopTM. Dual Layout Identical dimensions and pin layout of Analog and Digital Pico DLynx modules permit migration from one to the other without needing to change the layout. To support this, 2 separate Trim Resistor locations have to be provided in the layout. For the digital modules, the resistor is connected between the TRIM pad and SGND and in the case of the analog module it is connected between TRIM and GND MODULE TRIM (PVX012 / PDT012) Rtrim1 for Digital Rtrim2 for Analog SIG_GND External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise (see Figure 38) and to reduce output voltage deviations from the steady-state value in the presence of dynamic load current changes. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. TM The Tunable Loop allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C between the SENSE and TRIM pins of the module, as shown in Fig. 45. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. VOUT SENSE RTUNE GND (PIN 7) MODULE CTUNE Caution – Do not connect SIG_GND to GND elsewhere in the layout Figure 44. Layout to support either Analog or Digital PicoDLynx on the same pad. CO TRIM GND RTrim Figure. 45. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 2 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 1000uF that might be needed for an application to meet output ripple and noise requirements. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Table 3 lists recommended values of RTUNE and CTUNE in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 6A to 12A step change (50% of full load), with an input voltage of 12V. LINEAGE POWER 15 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Please contact your Lineage Power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external R-C to tune the module for best transient performance and stable operation for other output capacitance values or input voltages other than 12V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations. Co 1x47μF 2x47μF RTUNE 330 330 CTUNE 100pF 560pF 4x47μF 6x47μF 10x47μF 330 330 1500pF 2200pF 20x47μF 270 180 3900pF 6800pF Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 6A step load with Vin=12V. Vo Co RTUNE 5V 3.3V 2.5V 1.8V CTUNE 1500pF 2700pF 3300pF 5600pF ΔV 1.2V 0.6V 1x47μF 3x47μF 1x47μF 1x47μF 3x47μF + + + + + 5x47μF 330μF 330μF 2x330μF 3x330μF 6x330μF Polymer Polymer Polymer Polymer Polymer 330 330 270 270 220 180 99mV 58mV LINEAGE POWER 47mV 34mV 10nF 47nF 24mV 12mV 16 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The test set-up is shown in Figure 46. The preferred airflow direction for the module is in Figure 47. 25.4_ (1.0) Wind Tunnel PWBs Power Module Figure 47. Preferred airflow direction and location of hot-spot of the module (Tref). 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 46. Thermal Test Setup. The thermal reference points, Tref used in the specifications are also shown in Figure 45. For reliable operation the temperature at Q1 should not exceed 120oC and the temperature at L1 should not exceed 130oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. LINEAGE POWER 17 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Example Application Circuit Requirements: Vin: Vout: Iout: 12V 1.8V 9A max., worst case load transient is from 6A to 9A ΔVout: Vin, ripple 1.5% of Vout (27mV) for worst case load transient 1.5% of Vin (180mV, p-p) Vin+ VIN PGOOD + CI2 RTUNE MODULE CI1 Q1 Vout+ VOUT VOUT SENSE + CTUNE ON/OFF CO1 TRIM GND RTrim CI1 2x22μF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20) CI2 47μF/16V bulk electrolytic CO1 2 x 47μF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19) CO2 CTune RTune 1 x 330μF/6.3V Polymer (e.g. Sanyo Poscap) 3300pF ceramic capacitor (can be 1206, 0805 or 0603 size) 270 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 10kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) LINEAGE POWER CO2 18 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Mechanical Outline Dimensions are in millimeters and (inches). Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated] x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) 17 16 12 15 LINEAGE POWER FUNCTION PIN FUNCTION 1 2 3 4 ON/OFF VIN GND VOUT VS+ (SENSE) TRIM GND NC NC 10 11 12 13 PGOOD NC NC NC 14 NC 15 16 17 NC NC NC 5 6 7 8 9 13 14 PIN 11 7 8 9 19 Document No: DS10-008 ver. 1.12 PDF name: PVX012A0X.pdf 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Recommended Pad Layout Dimensions are in millimeters and (inches). Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated] x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) 16 17 13 12 11 9 LINEAGE POWER 8 7 14 15 PIN FUNCTION PIN FUNCTION 1 2 3 4 5 6 7 8 9 ON/OFF VIN GND VOUT VS+ (SENSE) TRIM GND NC NC 10 11 12 13 14 15 16 17 PGOOD NC NC NC NC NC NC NC 20 Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Packaging Details The 12V Analog Pico DLynxTM 12A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 200 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions: Outside Dimensions: Inside Dimensions: Tape Width: LINEAGE POWER 330.2 mm (13.00) 177.8 mm (7.00”) 24.00 mm (0.945”) 21 Document No: DS10-008 ver. 1.12 PDF name: PVX012A0X.pdf Data Sheet August 31, 2011 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Surface Mount Information Pick and Place The 12VAnalog Pico DLynxTM 12A modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow o temperatures of up to 300 C. The label also carries product information such as product code, serial number and the location of manufacture. Nozzle Recommendations The module weight has been kept to a minimum by using open frame construction. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 7 mm. Bottom Side / First Side Assembly The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 48. Soldering outside of the recommended profile requires testing to verify results and performance. MSL Rating The 12VAnalog Pico DLynxTM 12A modules have a MSL rating of 1. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of ≤ 30°C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. This module is not recommended for assembly on the bottom side of a customer board. If such an assembly is attempted, components may fall off the module during the second reflow process. The 12VAnalog Pico DLynxTM 12A modules are leadfree (Pb-free) and RoHS compliant and fully compatible in a Pb-free soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). For questions regarding LGA, solder volume; please contact Lineage Power for special manufacturing process instructions. LINEAGE POWER Per J-STD-020 Rev. C Peak Temp 260°C 250 Reflow Temp (°C) Lead Free Soldering 300 200 150 * Min. Time Above 235°C 15 Seconds Heating Zone 1°C/Second Cooling Zone *Time Above 217°C 60 Seconds 100 50 0 Reflow Time (Seconds) Figure 48. Recommended linear reflow profile using Sn/Ag/Cu solder. Post Solder Cleaning and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Board Mounted Power Modules: Soldering and Cleaning Application Note (AN04-001). 22 12A Analog Pico DLynxTM: Non-isolated DC-DC Power Modules 3 – 14.4Vdc input; 0.6Vdc to 5.5Vdc output; 12A output current Data Sheet August 31, 2011 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 4. Device Codes Device Code Input Voltage Range Output Voltage Output Current On/Off Logic Sequencing Comcodes PVX012A0X3-SRZ 3 – 14.4Vdc 0.6 – 5.5Vdc 12A Negative No CC109159686 PVX012A0X3-SRDZ 3 – 14.4Vdc 0.6 – 5.5Vdc 12A Negative No CC109168811 PVX012A0X43-SRZ 3 – 14.4Vdc 0.6 – 5.5Vdc 12A Positive No TBA* -Z refers to RoHS compliant parts *Please contact Lineage Power for more information Table 5. Coding Scheme Package Family Identifier Sequencing Output Option current P V X 012A0 P=Pico D=Dlynx Digital T=with EZ Sequence 12A V= DLynx Analog. X=without sequencing U=Micro M=Mega G=Giga Output voltage On/Off logic X X= 4= programm positive able output No entry = negative Remote Sense Options ROHS Compliance 3 -SR -D Z 3= Remote Sense S= Surface Mount D = 105°C operating ambient, 40G operating shock as per MIL Std 810F Z = ROHS6 R= Tape & Reel Asia-Pacific Headquarters Tel: +86.021.54279977*808 World Wide Headquarters Lineage Power Corporation 601 Shiloh Road, Plano, TX 75074, USA +1-888-LINEAGE(546-3243) (Outside U.S.A.: +1-972-244-WATT(9288)) www.lineagepower.com e-mail: [email protected] Europe, Middle-East and Africa Headquarters Tel: +49.89.878067-280 India Headquarters Tel: +91.80.28411633 Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents. © 2011 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved. LINEAGE POWER 23 Document No: DS10-008 ver. 1.12 PDF name: PVX012A0X.pdf